Finding the Fourth Proportional to 1,667.98, 2,501.82 and 572.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.98 : 2,501.82 = 572.20 : x
2. Step 2: Convert to fraction form
   1,667.98/2,501.82 = 572.20/x
3. Step 3: Cross multiply
   1,667.98x = 2,501.82 × 572.20
4. Step 4: Simplify right side
   1,667.98x = 1,431,541.40
5. Step 5: Solve for x
   x = 1,431,541.40/1,667.98
6. Step 6: Final answer
   x = 858.25